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Pursuant to Sections 301, 304, 306, 307, and 501 of the Clean Water Act and the Settlement Agreement in Natural Resource Defense Council v. Train 8 ERC 2120 (D.D.C. 1976) modified 12 ERC 1833 (D.D.C. 1979), EPA has collected and analyzed data for plants in the Metal Molding and Casting Point Source Category. There are no existing effluent limitations or performance standards for this industry. This document and the administrative record provide the technical basis for proposing effluent limitations guidelines for existing direct dischargers, pretreatment standards for new and existing indirect dischargers, and standards of performance for new source direct dischargers.